Reverse reaction in a chemical equilibrium is favoured by the Increase in the concentration of oneof the products Increase in the concentration of one of the reactants Removal of one of the products regularly None of these TRUE ANSWER : ? YOUR ANSWER : ?
If a solid-gas non-catalytic reaction occurs at very high temperature, the rate controlling step is the __________ diffusion. Ash layer None of these Film Pore TRUE ANSWER : ? YOUR ANSWER : ?
A batch reactor is characterised by Constant residence time Very low conversion Variation in extent of reaction and properties of the reaction mixture with time Variation in reactor volume TRUE ANSWER : ? YOUR ANSWER : ?
Catalyst carriers Have very high selectivity Inhibit catalyst poisoning Increase the activity of a catalyst Provide large surface area with a small amount of active material TRUE ANSWER : ? YOUR ANSWER : ?
If the time required for half change is inversely proportional to the square of initial concentration and the velocity depends on the units in which the concentration term is expressed, then the order of reaction is 0 3 1 2 TRUE ANSWER : ? YOUR ANSWER : ?
A pulse tracer is introduced in an ideal CSTR (with a mean residence time ι) at time, t = 0. The time taken for the exit concentration of the tracer to reach half of its initial value will be 0.693τ τ/0.693 0.5τ 2τ TRUE ANSWER : ? YOUR ANSWER : ?
The conversion XA and residence time data are collected for zero order liquid phase reaction in a stirred tank reactor. Which of the following will be a straight line? XA/(1 - XA)Vs τ XA Vs ln τ XA Vs . τ XA(1 - XA)Vs τ TRUE ANSWER : ? YOUR ANSWER : ?
For all positive reaction orders for a particular duty, Reactor size is independent of the type of flow Density variation during reaction affects design Mixed reactor is always larger than the plug-flow reactor Ratio of the volume of the mixed reactor to that of the plug-flow reactor decreases with order TRUE ANSWER : ? YOUR ANSWER : ?
A catalyst in a chemical reaction Increases the frequency of collisions of reacting species Decreases the activation energy Alters the reaction mechanism All of these TRUE ANSWER : ? YOUR ANSWER : ?